<%--
  Created by IntelliJ IDEA.
  User: GSM
  Date: 2023/11/15
  Time: 10:33
  To change this template use File | Settings | File Templates.
--%>
<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<html>
  <head>
    <title>Insert title here</title>
  </head>
  <body>
    <h3>这是一个测试对象属性信息监听器的页面</h3>
    <%
      getServletContext().setAttribute("username","it cast");
      getServletContext().setAttribute("username","it");
      getServletContext().removeAttribute("username");
      
      session.setAttribute("username","it cast");
      session.setAttribute("username","it");
      session.removeAttribute("username");
      
      request.setAttribute("username","it cast");
      request.setAttribute("username","it");
      request.removeAttribute("username");
    %>
  </body>
</html>

